Single-player games like Zero Stress King: Idle Defense
Below are 10 single-player Steam games similar to Zero Stress King: Idle Defense, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Zero Stress King: Idle Defense page.
Ranked picks
- 1

castle idler
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Zero Stress King: Idle Defense.
castle idler is a short, relaxing incremental tower defense game with no waves. upgrade towers, collect coins, and unlock powerful prestige upgrades to defend your castle.
- 2

All Aboard! The Train Defense Express
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
Protect the Infinite Power Generator by looping around the train tracks! Battle endless waves of enemies in this unique hybrid of auto-battler, survivor, tower defense, idle/clicker gameplay. How long can you survive?
- 3

Timber Rush
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
Timber Rush is a fast-paced incremental roguelite where every swing explodes into upgrades, chaos, and massive numbers.
- 4

Desktop Defender
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Indie and Casual with Zero Stress King: Idle Defense.
An idle auto-battler that sits in the corner of your screen while you do other things.
- 5

IDLE BOSS RUSH
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
Slay giant bosses and turn the hollow wasteland into the almighty kingdom! Endlessly rewarding incremental game where you collect fountains of rare loot, unleash crazy combos and watch the monsters fall under your knees. Boss Rush that keeps on going when you're gone!
- 6

Maktala: Slime Lootfest
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
An incremental game where you kill hordes of slimes and use their loot to become stronger and farm them. Collect powerful loot, master skills, and uncover tons of content.
- 7

Gamblers Table
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
Gamblers Table is an incremental game where you toss coins to earn money. Buy bigger and better coins, unlock upgrades and hire little helpers to automate the process and take care of all the busy flipping work for you. Simple. Satisfying. Strangely compelling...
- 8

Tower Wizard
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
Help a wizard build and upgrade a wizard tower in this incremental game! Use the tower to study magic, summon spirits, create buildings, and influence the world.
- 9

Castle Break
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Indie and Casual with Zero Stress King: Idle Defense.
Breakout game + physics + shooting + building. Use your mouse like in air hockey to kick enemy bombs back into the evil Black Castle! Destroy enemy towers rockets and lasers. Build your base to protect your little dudes - you need them to win
- 10

Zero Orders Tactics
Single-player alternative to Zero Stress King: Idle Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Zero Stress King: Idle Defense.
🌋⚔ Terraforming + Into The Breach! An experimental puzzle strategy where you are not commanding your troops - now, you are shaping the battlefield itself! Nothing is random*, everything is predictable*, and the battlefield is changing. Every turn. By you.